condition mean min max 4 h after light 4.541663333333333 4.437130000000001 4.71321 8 h after light 4.437306666666667 4.4013 4.50593 12 h after light 4.4771133333333335 4.32152 4.63715 4 h after dark 4.4352 4.360609999999999 4.48496 8 h after dark 4.417863333333334 4.388330000000001 4.45413 12 h after dark 4.442746666666666 4.3783199999999995 4.4858400000000005